// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_HTTP_HTTP_AUTH_HANDLER_MOCK_H_
#define NET_HTTP_HTTP_AUTH_HANDLER_MOCK_H_

#include <memory>
#include <string>
#include <vector>

#include "base/memory/weak_ptr.h"
#include "net/http/http_auth_handler.h"
#include "net/http/http_auth_handler_factory.h"
#include "url/gurl.h"

namespace net {

class HostResolver;

// MockAuthHandler is used in tests to reliably trigger edge cases.
class HttpAuthHandlerMock : public HttpAuthHandler {
public:
    enum Resolve {
        RESOLVE_INIT,
        RESOLVE_SKIP,
        RESOLVE_SYNC,
        RESOLVE_ASYNC,
        RESOLVE_TESTED,
    };

    // The Factory class returns handlers in the order they were added via
    // AddMockHandler.
    class Factory : public HttpAuthHandlerFactory {
    public:
        Factory();
        ~Factory() override;

        void AddMockHandler(HttpAuthHandler* handler, HttpAuth::Target target);

        void set_do_init_from_challenge(bool do_init_from_challenge)
        {
            do_init_from_challenge_ = do_init_from_challenge;
        }

        // HttpAuthHandlerFactory:
        int CreateAuthHandler(HttpAuthChallengeTokenizer* challenge,
            HttpAuth::Target target,
            const SSLInfo& ssl_info,
            const GURL& origin,
            CreateReason reason,
            int nonce_count,
            const BoundNetLog& net_log,
            std::unique_ptr<HttpAuthHandler>* handler) override;

    private:
        std::vector<std::unique_ptr<HttpAuthHandler>>
            handlers_[HttpAuth::AUTH_NUM_TARGETS];
        bool do_init_from_challenge_;
    };

    HttpAuthHandlerMock();

    ~HttpAuthHandlerMock() override;

    void SetResolveExpectation(Resolve resolve);

    virtual bool NeedsCanonicalName();

    virtual int ResolveCanonicalName(HostResolver* host_resolver,
        const CompletionCallback& callback);

    void SetGenerateExpectation(bool async, int rv);

    void set_connection_based(bool connection_based)
    {
        connection_based_ = connection_based;
    }

    void set_allows_default_credentials(bool allows_default_credentials)
    {
        allows_default_credentials_ = allows_default_credentials;
    }

    void set_allows_explicit_credentials(bool allows_explicit_credentials)
    {
        allows_explicit_credentials_ = allows_explicit_credentials;
    }

    const GURL& request_url() const
    {
        return request_url_;
    }

    // HttpAuthHandler:
    HttpAuth::AuthorizationResult HandleAnotherChallenge(
        HttpAuthChallengeTokenizer* challenge) override;
    bool NeedsIdentity() override;
    bool AllowsDefaultCredentials() override;
    bool AllowsExplicitCredentials() override;

protected:
    bool Init(HttpAuthChallengeTokenizer* challenge,
        const SSLInfo& ssl_info) override;

    int GenerateAuthTokenImpl(const AuthCredentials* credentials,
        const HttpRequestInfo* request,
        const CompletionCallback& callback,
        std::string* auth_token) override;

private:
    void OnResolveCanonicalName();

    void OnGenerateAuthToken();

    Resolve resolve_;
    CompletionCallback callback_;
    bool generate_async_;
    int generate_rv_;
    std::string* auth_token_;
    bool first_round_;
    bool connection_based_;
    bool allows_default_credentials_;
    bool allows_explicit_credentials_;
    GURL request_url_;
    base::WeakPtrFactory<HttpAuthHandlerMock> weak_factory_;
};

} // namespace net

#endif // NET_HTTP_HTTP_AUTH_HANDLER_MOCK_H_
